About Sizeour bamboo jar lid measures approx. 70 x 54 mm in outer diameter and inner diameter, they can work with glass of 58 - 68 mm diameter mouth. Diameter of straw hole measures approx. 15 mm/ 0.59 inch.Natural Bamboo MaterialMason jar lids with straw hole are made by naturally bamboo material, which is biodegradable and safe to use, not easy to deform or break.Bamboo Jar Lid: These bamboo lids contain detachable silicone ring below, can replace for and compatible with most mason jar and canning jar, helping you to create novel party beverage and children's straw cup.Versatile StorageThis wide mouth mason jar lids are easy to screw off and. Being dishwasher safe, this durable metal canning lids can also be refrigerating, freezing storing.Warm tips: 1. clean lids after using; 2. do not use water above 85; 3. do not store any liquid in the mason jar when not in use; 4. not suitable for preserving or water immersion.